GENERAL Subsoil Investigation in Chellanam Harbour Subsoil Investigation in Chellanam Harbour General Civil Work

Boring Works

56.1.a:Mobilization including transportation of all necessary plant and equipment's and materials of boring, field testing and sampling and demobilization after completing the work - For machine boring

65.68:Supplying fibre boat with out OBM of size three meter to six meter with two boatmen to carry boring tower and boring accessories

OD3898/2025-2026:Diver with Diving set

OD3897/2025-2026:Supplying seaworthy country boats 20 to 25 ton capacity (to be used in pair) for making changadam to carry boring tower and accessories.

56.9.1:Erecting platform over 2 nos of 2nd Class Boat using Mango wood planks of not less than 30 mm thick, Mango wood joists of 100 mm x 70 mm at 60 cm intervals including labour and hire of all materials and dismantling the platform after completion of work etc complete. excluding hire of boats (A Platform of minimum size 6.00 m x 5.00 m will be required)

OD3896/2025-2026:Loading/Unloading boring plant, boring tower and all other accessories in the changadam without causing damages to the machineries

65.71:Towing the changadam with boring tower, boring plant and all other accessories through sea with out causing any damages to the departmental machineries and materials using mechanised boats and anchoring it at places pointed out by departmental officers at site

65.70:Assembling the boring plant, boring tower, wooden platform, pump set, engine etc for boring works at required points in sea including unloading them from changadam and as per the direction of departmental officers at site

65.72:Boring work in sea/ river in all classes of soils including laterite or granite, such as driving down and drawing out the casing pipe , connecting and disconnecting drill rods, doing drilling operations, jetting water, collecting SPT samples etc, as per the instruction of the departmental officers at site including hire charges of departmental boring plant and its accessories etc, complete

65.73:Hire of fibre boat with OBM of maximum OAL 3 meter with 1 boat man ( rate including 15% CP & OH)

65.74:Supplying watchman for watching the boring tower, plant etc, during working hours - in sea

65.75:Dismantling boring tower, wooden plat form, boring plant and all other accessories like engine, pump set, casing pipes, drilling rods etc, complete as per the instruction of the departmental officers at site and loading them on the changadam for conveying them to the required points in sea.

56.6:Recovering undisturbed soil samples using thin tube sampler of 75mm.to 100mm length internal dia 500mm length conforming to relevant IS Code at any required depth including clearing the bore hole etc complete.

56.7:Conducting standard penetration test in bore hole at any depth.

56.11.a:Compilation of all field data with recommendation for a suitable foundation after conducting necessary lab test (report in triplicate) - Machine boring for 5 bore holes.